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C. L. RIDGWAY.

HEATING STOVB.

No. 395,353. Patente-d Jan. 1, 1889.

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C. L. RIDGWAY.

, HEATING STOVE. No. 395,333. @Patent Jan. 1, 1333n llniTEn STATES PATENT OEETcE.

CHARLES li. RlDG\\"AY, OF EVERETI, MASSACIIUSETTS, ASSIGNOR TO THE RIDGlVA'Y FURAOE ANT) STOVE COMPANY, OF NASHUA, lNET HAMP- SHIRE.

HEATINGHSTOVE.

SPECIFICATION forming part of Letters Patent No. 395,353, dated January 1, 1889.

Application filed July 28, 1886. Serial No. 209,276. (No model.)

To all whom it may con/cela@ Be it known that I, CHARLES L. RIDGWAY, of' Everett, in the county of ll'iiddlesex and State of Massachusetts, a citizen of the United l States, have invented a new and useful Iniprovein ent in Heating-Stoves, of which the following is a full, clear, and exact description,

reference being had to the accompanying-l drawings, forming a part of this specifica- To tion, in. explaining its nature.

The invention relates to a heating-stove having a square or substantially square basesection, a square or substantially square upper section, an intermediate section cylindrical in forni containing the lire-pot and a heating-chamber about it, and separate or independent downtake l'lues arranged outside the cylindrical section to connect the coniluistion-chaniber within the Aupper section, 2o preferably at its corners, with the 'flue Vin the basesection.

The invention further relates to a heatingstove having a chamber about an open firepot, which is connected with or opens into 2 5 the coinbustioii-chainber and is separated from the ash-pit by a partition, which prevents the entrance of air into it from the ashpit.

The invention further relates to a heating- 3o stove having a heating-chamber about the lire-pot and a revolving iire-pot, the heatingchaniber opening into or connected with the coinbustion-chainber, and in effect forming a part thereof, and being' surrounded by a cas- 3 5 ing which forins the exterior of the stove, so that an increased heating or radiating surface of great power is provided the stove.

The invention further relates to various details of construction and organization, refer- 4o ence to which will hereinafter be inade.

Referring to the drawings, Figure l is a view representing a front elevation of iny iinproved stove. Fig. 2 is a vertical central section of the stove, taken from side to side.

Fig. 3 is a vertical central section of the stove, taken frein front to rear. Fig. l is a vertical section, principally central,fro1n the left side of the stove to the right side of the fire-pot and then backward'upon a diagonal line to 5o the right rear corner of the stove. Fig. 5 is a view in horizontal section and plan upon and below the line ro of Fig. 3. Fig. 6 is a view in horizontal section and plan upon and below the line y' y of Fig. 3. Figs. 7 and 8 are views in horizontal section and plan to represent the arrangement of the base-fines. Fig. 9 is a view in. plan, and Fig. l0 is a view in section, of the upper horizontal base-plate and fire-pot support. Fig. ll is a view in perspective of the device or scraper for re- 6o nioving ashes froni aprojecting flange of the base-plate of the fire-pot.

A represents the base-section of' the stove. It preferablyis square or rectangular in horizontal area, and it contains the ash-pit a and the base-fines, to which reference will hereinafter be made. The upper section, B, of the stove, also, is preferably square or rectangu lar in plan, and it contains the combustionchaniber o. 1 7o C is the intermediate sect-ion, preferably cylindrical in forni, and which is sustained upon the base-section, and in turn supports the upper section, B. It contains the fire-p0t c and a chaniber, D, which surrounds the ire- 7 5 pot, and is connected at its upper end with the combustion-chainber- E E E2 E3 are pipes, preferably cylindrical in shape, arranged outside the intermediate or cylindrical section, C, and preferably to con 8o necteach corner of the upper section, B, withy the corresponding corn ers of the lower section, A. These pipes forni the down fines or passages e e e2 e3, which connect the combustionchainber b with the base-iiues. The two rear lines, e2 e3, extend into the two side lines, e7 es, of the base, which are arranged on each side of the ash-pit, and these in turn open into or connect with or form parts of the lower baselues, e4 e5, and these base-fines e4 e5 open at 9o their front ends into the horizontal central baseflue, e6, which extends below the ash-pit plate a from the front of the stove back to the uptake passage EA1 a-nd pipe The two front lines, e e', open into the front ends of 9 5 the upper side base-fines, e7 es, so that the products of combustion which pass down the front iiues, e e', pass through the front parts of the lines elf e8 and through. the front parts of the lowerbaseiiues, e4 e5, directly tothe central roo base-Hue, e6, while the products which pass through the rear flues, e2 e3, pass forward 'in the tlues e7 es c"L e5 to enter the central iue, e6. The side base-fines@T es, are formed by the `tineplate e, which also forms the ash-pit wall, and the outer plates, ew, of thc base, and the lower baselines, e4 e, are separated. from the central flue, c, bythe lline-plates@11 (12. (See l `igs. 2, 3, and 8.)

The fire-pot c is provided,preferal'ily, with vertical spaces or openings extending from its top bar to its lower bar, and it is by pre ference so sustained within the chamber l) as to be revolved.

The manner of mounting the [ire-pot and grate and of forming the d i vision between the ashpit and the chamber l.) which l prefer to employ is represented in Figs. 2, 3, el, and il, where c represents the upper base-plate, of which the outer portion, c2, furnishes the ornamental exposed portion of the plate. The inner portion has connected with it an annular support, c3, for the small steel balls 0*, upon which the fire-pot is mounted. This annular support c3 has an upwardly-extending lip, c, and horizontal surface C and a vertical surface, c7, and these three surfacesnamely, the surface of the lip and the horizontal and the vertical surfacesform a pocket or recess, in which the balls c'r1 are contained. This section c3 is connected with the outer section of the base-plate by arms or sections c3, which are cast to provide openings or spaces c between them. The plate has also the side lug, co, projecting downward into the ash-pit space and being a support for the pivot f of the grate F. The sections of the fire-pot are sustained upon an annular plate or casting, G, which has the downwardly-extending ring g, the section g having the vertical surface g2 vand the horizontal surface g3, which receive the balls c and form the surfaces which bear upon them, and the cogs g5 and horizontal extension or flange g, which laps upon the section c11 of the baseplate c', but does. not come directly in contact therewith. The part bearing the cogs and the ange g form the di vision or partition between the ash-pit and the chamber D. The annular fire-potsupportin g late G also has a recess (i )referabl f V1 P 7 1 l 3 shaped or open at its top, which receives the base-extension cl2, which is preferably narrower at its bottom than at its top, which extends down from the lire-pot and secures the sections of the same to the plate G.

The plate G and the ire-pot are revolved by means of the pinion H, which has a shaft, h, which extends through one side of the stove, and is supported by a suitable box which is fastened to the plate of the stove. This gear is arranged to project through one of the holes or recesses between two of the arms or sections c3 of the base-plate c', and is adapted to mesh with or engage the cogs g5 upon the plate G. A small pocket, 7L', extending from the ash-pit, is arranged torreceive the gear.

The grate F is represented as adapted to be tilted or turned upon its pivots ff', but not to be oscillated. I would say, however, that I do not confine myself to this especial form of grate. lts pivot or journal is extended through the side of the stove to furnish the end f2 :for the reception of an oper ating wrench or handle, and it has a bearing, fg, in the wall of the stove.

The upper parts of the partition-plates e @l2 preferably are cast with a section, a?, of the ash-pit base-plate c', which is so held or supported that it is capable of being lifted out of the ash-pit to provide access to the fines beneath it.

The chamljier .D is formed, ,it will be seen, upon the inside by the .fire-pot wall, upon the lower side by the plate which separates it from the ash-pit, and upon the outer side by the casing C of the section Cot' the stove, which preferably is of but one thickness of metal. lt has an enlargement, l\[, at the front, which has an opening, on., whereby access to it and to the iire-pot is obtained, which is closed by adoor, m. This door is represented as being hinged at its lower edge, m2, and as being movable outward and downward to uncover the opening.

There .is arranged in front of the baseplate c', which separates the front part of the ashpit from the enlargement M of the chamber l), a hole, m3, through which ashes which escape from the fire-pot onto the plate supporting it escape or are removed to the ash-pit. This hole has a sliding covering-plate, m", which is moved to open and close it by a rod, m5. There is arranged to rest upon the upper surface of the iiange (/G of the plate G a devicev for throwing the ashes from the plate as it is turned into this enlargement and, it' the hole is uneo\i'ered, into the ash-pit. This device comprises a plate or bar, l @having oppositelyinclined deliecting-surfaces n, so shaped and arranged that whichever way the grate revolved the ashes are caused to be thrown or removed from the plate by it.

The coinbustion-cllamber is connected wiih the escape-passage by the direct port O. A coalguard, o, having, preferably, the solid front section, o', back of the entrance to the coinbustion-chamber and inclined from the sides and. front and back of the stove, extends to the inner edge of the tire-pot and covers in part the chamber l) and the entrances to the. downflues. It is raised at the corners 02, so as to provide an unimpeded connection or passage between all parts of the combustionchainber and the chamber l) with the downflues.

The sides or walls of the base-section are preferably composed of cast metal, and the wall or casing of the intermediate section, C, may be either of cast metal or of sheet metal. The upper section is preferably of sheet metal. The pipes which connect the combustion-chamber with the base-fines preferably are made of sheet metal, although they ASO IOO

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IIS

i fin. is more complete; but I would not be unmay be cast, iit' desired. rlhe eii'ect of this (ionstruction is to provide a heatingstove of very great heating` capacity, as, in addition to the ordinary heating-surface provided by the combustion-chamber and the base-ducs, there is also provided a heating-surface formed by the use of the chamber C and its casing, which terms a radiating-surface. In addition to this there is the heating-surface provided by the area 0l the pipes forming the down tlues. The ett'ect ol' this chamber l) about the fire-pot is not only to produce an increased heatwrzuliating surface, but also to aid the combustion ol l'uel and the combustion ol' gases .in the combustiori-chamber. This is eltected by separating the chamber from the ash-pit, so that verylittle, it any, air enters it from the ash-pit, all the air entering the ash-pit being used to support the combustion in the repot by passing, either through the grate or above the grate, into the tire-pot. The combustion in the lire-pot is thus caused to be upward into the eombustion-chamber and outward through the openings in the lirepot into the chamber I), and it is for this reason that I term the chamber D a downward extension of the combustion-chamber. Its use in effecting the combustion ot' the gases in the combustion-chamber will be readily understood when it is observed that by permitting this lateral combustion, aswell as direct combustion, in the combustion-chamber the intensity ot' the lire is caused to varythat is, it hotter at iirst in the lower part of the lire-pot and close to the wall thereof, so that the products ot' combustion pass out into the chamber I), andin theirhighly-heated condition pass into the combustion-chamber and unite with the gases which are produced from the remainder ot' the fuel, and which would not otherwise be consumed because not so highly heated. I prefer, also, that the lirepot be so arranged that it may be revolved within the chamber C, as by so doing the plate G is more easily treed from ashes and access tothe fuel-chamber through the door dei-stood as coniining myself to a lire-pot which is adz'tpted to bc revolved. I would also say that two downfiues only, instead of tour, may be priwilfled, and that it would be possible to extend them through the chamber D, although the construction already herein described is very much to be preferred.

rIhe plate N, having the delecting-surtaccs "n n, has an arm, fa, (best seen in llig. ll,) which extends to the crosssbar n? and this cross-bar has the end pivots, n, by which, in connection with suitable caps, the bar 'agis so secured in place as to permit the scraping or clearing end of the plate or arm to rise and fall to accommodate itself to any inequalities or obstructions upon the surface of the Iiange gli, which it clears. This automatic up and down movement presents a great practical advantage over a construction which employs a scraper which is rigidly attached and has no lvertical movement in relation to the revolving plate. Neither a scraper rigidly attached to a fixed portion of a stove or furnace and operatingin connection with a mov able plate to clear the same ot' ashes and other refuse nor the described annular tire-pot-supporting plate is herein broadly claimed, both being shown inV VUnited States Patent No. 281,795, issued to me July Q41-, lSCl.

A recessed plate and a series of balls in the. recess constituting aiiu'i-t'riction supports for a revoluble lire-pot wall are not herein claimed, either separately or in combination, the same being elnlnaci-d in my application, serially numbered l7;,'7t8`, iiled in United States Patent Office on July 27, i885.

I'Iaving thus i'ully described my invention, I claim and desire to secure bylietters VPatent of the United Statesl. A heating-stove having the base-section A, the upper section, B, containing a combustioli-chamber, a heatradiating section or shell, (l, the tire-pot c, inclosed thereby, and a chamber, I), interposed between the radiat- .ing outer section and the lire-pot, separated from thc ash-pit and connected with the combustion-cllamber, substantially as described.

2. The combimttion, in a heating-stove,ot a base-section containing an ash-pit and baseitlues, an upper section containing a combustion-chamber, an interposed section, the lirepot contained therein provided with openings or recesses, a chamber, D, surrouiuling the same and openingI into the combustionchamber, a parti tion-plate separating the said chamber from the ash-pit, the pipes Iii E L2 E3, forming the (lown'tlues, and the uptake El, substantially as described.

il. The (m'in'bination oli' the base having the side lines, e7 ci", arranged on each side of the ash-pit, thc side fines, ci' e, and the horizont-al tine eu below the ash-pit plate, the front idues, e e', opening into the .lront ends of the side dues, e'l e", the combusi'ion,clia1nl)er l), and the uptake E", substantiall.,1 as described.

4. The base-plate c', having the section c2, forming an exposed surface of the section c3, constituting a support for the h re-pot wall, and the intern'lediate arms, c, Iormingtherecesses c, in munbination, substantially as described.

The combination, with the stove.,I of the annular plate G, tor supporting a iireepot, having the recess g"`, for receiving the extension cl2 ot' the tir spot, substantially as described.

(5. The eombinaiimi, with a stove, ot' the annular plate G, havingI the downwardly-extending ring g, the surfaces (/2 g3, the flange g, the teeth g5, and the recess (/7, tor receiving and holding the base ot the Vtire-pot wall, substantially as describelgl.

7. The plate c', having a ball-hollling recess provided with the lip ci, in cmnbination with the balls e, the plate G, and. the tire-pot wall c, substantially as described.

S. The combination, in a heating-stove, of the fire-pot c, the chamberl), opening into the combustion-chamber h, the casing C', forming IOO IIO

[lange g, subchamber D, the fines e e e2 e", and the `guard S 0, Substantially as described.

11. In a heating-stove, the conibil1ation,witli the fuel-chamber, of the coal-guard 0, raised or extending' upward at its corners o?, substantially as and for the {nu-poses described.

12. The eonibinati'nl oftheoute1'casing,e, 1

with the plate e, shaimd to provide ihe basevfines e" es, substantially as described.

13. In a heating-stove, the asli-1)itd,l1avii1g the pocket 7L,for holding` the gearI'Lsubstantially as described.

14. The combination, in a heating-stove, 'of the chamber D, having the enlargement M, and the door m, hinged at m2 to open outward and downward, substantially as described.

15. The combination of the plate G,l1aving the extension or fia-nge gavith the scraper N, having one or more de'ilecting-surfaces, `n, and Supports to permit a vertical movement to be imparted to it by the plate or by any obstruction thereon, substantially as and for the purposes described.

CHARLES L. RIDGVVAY.

Witnesses:

F. F. RAYMOND, 2d, J. M. DOLAN. 

